/* roulang page: index */
:root{
  --c-primary:#D8455E;
  --c-primary-dark:#B3334A;
  --c-primary-soft:#FDEDF0;
  --c-accent:#E8863C;
  --c-ink:#211D27;
  --c-ink-2:#4B4553;
  --c-ink-3:#7E7788;
  --c-line:#ECE5E8;
  --c-bg:#FFFFFF;
  --c-bg-warm:#FBF7F6;
  --c-bg-soft:#F5EFF1;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(33,29,39,.05);
  --shadow-2:0 8px 24px -12px rgba(33,29,39,.16);
  --shadow-cta:0 10px 22px -10px rgba(216,69,94,.55);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body.ys-body{
  margin:0;padding:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;line-height:1.9;letter-spacing:.01em;
  color:var(--c-ink-2);background:var(--c-bg);
}
img{max-width:100%;display:block;}
a{color:var(--c-ink-2);text-decoration:none;transition:color .25s ease;}
a:hover{color:var(--c-primary);}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 1.2em;}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;letter-spacing:0;}
.ys-container{max-width:var(--container);margin:0 auto;padding:0 20px;}
.ys-skip{position:absolute;left:-9999px;top:0;background:var(--c-primary);color:#fff;padding:10px 16px;z-index:200;border-radius:0 0 var(--r-sm) 0;}
.ys-skip:focus{left:0;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}

/* ============ header ============ */
.ys-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease,height .25s ease;
}
.ys-header.is-scrolled{box-shadow:var(--shadow-1);}
.ys-nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .25s ease;}
.ys-header.is-scrolled .ys-nav{height:60px;}
.ys-logo{display:flex;align-items:center;gap:10px;color:var(--c-ink);}
.ys-logo:hover{color:var(--c-ink);}
.ys-logo svg{width:32px;height:32px;flex:none;}
.ys-logo-text{display:flex;flex-direction:column;line-height:1.2;}
.ys-logo-name{font-size:19px;font-weight:800;letter-spacing:.02em;}
.ys-logo-sub{font-size:11px;color:var(--c-ink-3);font-weight:400;letter-spacing:.04em;}
.ys-nav-links{display:flex;align-items:center;gap:26px;}
.ys-nav-links a{
  position:relative;font-size:15px;color:var(--c-ink-2);padding:6px 0;
}
.ys-nav-links a::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--c-primary);
  transition:right .25s ease;
}
.ys-nav-links a:hover{color:var(--c-primary);}
.ys-nav-links a:hover::after,.ys-nav-links a.is-active::after{right:0;}
.ys-nav-links a.is-active{color:var(--c-primary);font-weight:600;}
.ys-nav-right{display:flex;align-items:center;gap:16px;}
.ys-ghost-link{font-size:14px;color:var(--c-ink-3);}
.ys-ghost-link:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.ys-burger{display:none;width:42px;height:42px;border:1px solid var(--c-line);border-radius:var(--r-sm);background:#fff;cursor:pointer;align-items:center;justify-content:center;}
.ys-burger span{display:block;position:relative;width:18px;height:2px;background:var(--c-ink);border-radius:2px;transition:.25s ease;}
.ys-burger span::before,.ys-burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);border-radius:2px;transition:.25s ease;}
.ys-burger span::before{top:-6px;}
.ys-burger span::after{top:6px;}
body.is-open .ys-burger span{background:transparent;}
body.is-open .ys-burger span::before{top:0;transform:rotate(45deg);}
body.is-open .ys-burger span::after{top:0;transform:rotate(-45deg);}

.ys-drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;background:#fff;z-index:150;
  transform:translateX(100%);transition:transform .3s ease;display:flex;flex-direction:column;
  padding:26px 22px;box-shadow:-18px 0 40px -24px rgba(33,29,39,.4);overflow-y:auto;
}
body.is-open .ys-drawer{transform:translateX(0);}
.ys-drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.ys-drawer-close{width:38px;height:38px;border:1px solid var(--c-line);border-radius:var(--r-sm);background:#fff;font-size:18px;color:var(--c-ink-2);cursor:pointer;line-height:1;}
.ys-drawer nav{display:flex;flex-direction:column;gap:4px;}
.ys-drawer nav a{padding:12px 8px;border-bottom:1px solid var(--c-line);font-size:15px;color:var(--c-ink);}
.ys-drawer nav a.is-active{color:var(--c-primary);font-weight:600;}
.ys-drawer-foot{margin-top:auto;padding-top:24px;}
.ys-drawer-foot .btn-primary{width:100%;display:block;text-align:center;}
.ys-overlay{position:fixed;inset:0;background:rgba(33,29,39,.45);z-index:140;opacity:0;visibility:hidden;transition:.3s ease;}
body.is-open .ys-overlay{opacity:1;visibility:visible;}
body.is-open{overflow:hidden;}

/* ============ buttons ============ */
.btn-primary,.btn-ghost,.btn-ghost-dark{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;padding:14px 26px;border-radius:var(--r-sm);
  cursor:pointer;transition:all .25s ease;border:1.5px solid transparent;text-align:center;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--shadow-cta);}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 14px 26px -12px rgba(216,69,94,.6);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);border-color:var(--c-primary-dark);}
.btn-ghost-dark{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.5);color:#fff;}
.btn-ghost-dark:hover{background:rgba(255,255,255,.16);color:#fff;border-color:#fff;}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);border-bottom:1px solid transparent;}
.btn-link:hover{color:var(--c-primary-dark);border-bottom-color:var(--c-primary-dark);}

/* ============ hero ============ */
.ys-hero{position:relative;overflow:hidden;background:#181420;color:rgba(255,255,255,.82);}
.ys-hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;opacity:.42;
}
.ys-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(20,16,26,.96) 0%,rgba(20,16,26,.86) 48%,rgba(20,16,26,.62) 100%);
}
.ys-hero-inner{
  position:relative;z-index:2;display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center;
  padding-top:66px;padding-bottom:70px;
}
.ys-hot-badge{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:500;
  padding:6px 14px;border-radius:var(--r-pill);background:rgba(232,134,60,.14);
  border:1px solid rgba(232,134,60,.5);color:#F6B27C;letter-spacing:.02em;
}
.ys-hot-badge i{width:6px;height:6px;border-radius:50%;background:var(--c-accent);display:block;animation:pulse 1.8s infinite;}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1);}50%{opacity:.45;transform:scale(.8);}}
.ys-hero h1{
  color:#fff;font-size:38px;line-height:1.34;margin:20px 0 16px;letter-spacing:-.01em;
  font-family:"Noto Serif SC","Songti SC",-apple-system,"PingFang SC",serif;
}
.ys-hero-sub{font-size:16px;color:#F3C7CE;margin-bottom:16px;font-weight:500;}
.ys-hero-desc{font-size:15.5px;line-height:1.95;color:rgba(255,255,255,.76);max-width:600px;margin-bottom:26px;}
.ys-hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px;}
.ys-hero-meta{display:flex;flex-wrap:wrap;gap:22px;font-size:13.5px;color:rgba(255,255,255,.7);}
.ys-hero-meta li{display:flex;align-items:center;gap:7px;}
.ys-hero-meta svg{width:16px;height:16px;color:var(--c-accent);flex:none;}
.ys-hero-poster{position:relative;}
.ys-poster-frame{
  position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid rgba(255,255,255,.16);
  box-shadow:0 30px 60px -30px rgba(0,0,0,.75);
}
.ys-poster-frame img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.ys-poster-frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(24,20,32,0) 45%,rgba(24,20,32,.7) 100%);
}
.ys-float-card{
  position:absolute;left:18px;bottom:18px;z-index:3;background:rgba(255,255,255,.96);
  border-radius:var(--r-md);padding:12px 16px;box-shadow:var(--shadow-2);
  font-size:12.5px;color:var(--c-ink-3);line-height:1.6;
}
.ys-float-card strong{display:block;font-size:20px;color:var(--c-primary);font-weight:800;line-height:1.3;}
.ys-poster-tag{
  position:absolute;right:16px;top:16px;z-index:3;background:rgba(216,69,94,.92);color:#fff;
  font-size:12px;padding:5px 12px;border-radius:var(--r-pill);letter-spacing:.04em;
}

/* ============ sections ============ */
.ys-section{padding:76px 0;border-top:1px solid var(--c-line);}
.ys-section.is-warm{background:var(--c-bg-warm);}
.ys-section.is-ink{background:#211D27;border-top:none;color:rgba(255,255,255,.72);}
.ys-head{max-width:760px;margin-bottom:40px;}
.ys-head.is-center{margin-left:auto;margin-right:auto;text-align:center;}
.ys-eyebrow{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--c-primary-dark);
  background:var(--c-primary-soft);padding:5px 12px;border-radius:var(--r-pill);margin-bottom:14px;
}
.ys-head h2{font-size:25px;line-height:1.5;margin-bottom:14px;}
.ys-head p{font-size:15px;color:var(--c-ink-3);line-height:1.9;margin:0;}
.ys-section.is-ink .ys-head h2{color:#fff;}
.ys-section.is-ink .ys-head p{color:rgba(255,255,255,.66);}
.ys-section.is-ink .ys-eyebrow{background:rgba(216,69,94,.18);color:#F09AAB;}

/* pain grid */
.ys-pain-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--c-line);}
.ys-pain-item{padding:26px 24px 26px 0;border-right:1px solid var(--c-line);}
.ys-pain-item:last-child{border-right:none;}
.ys-pain-item .num{font-size:13px;font-weight:700;color:var(--c-accent);letter-spacing:.1em;display:block;margin-bottom:10px;}
.ys-pain-item h3{font-size:16.5px;margin-bottom:8px;}
.ys-pain-item p{font-size:13.5px;color:var(--c-ink-3);margin:0;line-height:1.8;}

/* story cards */
.ys-story-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.ys-story-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;
  box-shadow:var(--shadow-1);transition:all .25s ease;display:flex;flex-direction:column;
}
.ys-story-card:hover{border-color:rgba(216,69,94,.4);box-shadow:var(--shadow-2);transform:translateY(-2px);}
.ys-story-card .thumb{overflow:hidden;}
.ys-story-card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease;}
.ys-story-card:hover .thumb img{transform:scale(1.02);}
.ys-story-body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1;}
.ys-story-body p{font-size:14.5px;color:var(--c-ink-2);line-height:1.85;margin-bottom:18px;flex:1;}
.ys-story-person{display:flex;align-items:center;gap:10px;border-top:1px solid var(--c-line);padding-top:14px;}
.ys-avatar{
  width:36px;height:36px;border-radius:50%;background:var(--c-bg-soft);color:var(--c-primary-dark);
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;flex:none;
}
.ys-story-person b{display:block;font-size:13.5px;color:var(--c-ink);font-weight:600;}
.ys-story-person span{display:block;font-size:12px;color:var(--c-ink-3);}

/* stats band */
.ys-stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:36px;}
.ys-stat b{display:block;font-size:40px;font-weight:800;line-height:1.15;color:#fff;letter-spacing:-.02em;}
.ys-stat b em{font-style:normal;font-size:18px;color:var(--c-accent);margin-left:4px;font-weight:600;}
.ys-stat span{display:block;font-size:13px;color:rgba(255,255,255,.6);margin-top:8px;line-height:1.7;}

/* compare */
.ys-compare{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.ys-compare-col{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:28px 26px;}
.ys-compare-col.is-after{border-color:rgba(216,69,94,.35);box-shadow:var(--shadow-2);}
.ys-compare-col h3{font-size:17px;margin-bottom:18px;display:flex;align-items:center;gap:8px;}
.ys-compare-col .dot{width:22px;height:22px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:12px;flex:none;}
.ys-compare-col.before .dot{background:var(--c-bg-soft);color:var(--c-ink-3);}
.ys-compare-col.after .dot{background:var(--c-primary-soft);color:var(--c-primary);}
.ys-compare-col ul li{
  display:flex;gap:10px;font-size:14px;line-height:1.8;padding:11px 0;border-bottom:1px dashed var(--c-line);
}
.ys-compare-col ul li:last-child{border-bottom:none;}
.ys-compare-col.before li{color:var(--c-ink-3);}
.ys-compare-col.after li{color:var(--c-ink-2);}
.ys-compare-col .mark{font-weight:700;flex:none;line-height:1.8;}
.ys-compare-col.before .mark{color:#B9B1BE;}
.ys-compare-col.after .mark{color:var(--c-primary);}

/* steps */
.ys-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;}
.ys-step{position:relative;padding-top:8px;}
.ys-step .step-num{
  font-size:30px;font-weight:800;color:transparent;-webkit-text-stroke:1.4px var(--c-accent);
  letter-spacing:.02em;line-height:1;display:block;margin-bottom:14px;
}
.ys-step h3{font-size:16.5px;margin-bottom:8px;}
.ys-step p{font-size:13.5px;color:var(--c-ink-3);line-height:1.8;margin:0;}
.ys-step::after{
  content:"";position:absolute;top:22px;left:52px;right:-14px;height:1px;
  border-top:1px dashed var(--c-line);
}
.ys-step:last-child::after{display:none;}

/* topic wall */
.ys-topic-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:24px;}
.ys-topic-card{
  position:relative;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--c-line);
  background:#fff;box-shadow:var(--shadow-1);transition:all .25s ease;display:block;
}
.ys-topic-card:hover{border-color:rgba(216,69,94,.4);box-shadow:var(--shadow-2);transform:translateY(-2px);}
.ys-topic-card .thumb{overflow:hidden;}
.ys-topic-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.ys-topic-card:hover .thumb img{transform:scale(1.03);}
.ys-topic-card.large .thumb img{aspect-ratio:16/10;}
.ys-topic-card.small .thumb img{aspect-ratio:16/10;}
.ys-topic-body{padding:18px 20px 20px;}
.ys-topic-body .cat{font-size:11.5px;color:var(--c-primary-dark);background:var(--c-primary-soft);display:inline-block;padding:3px 10px;border-radius:var(--r-pill);margin-bottom:10px;font-weight:600;}
.ys-topic-body h3{font-size:17px;margin-bottom:8px;}
.ys-topic-body p{font-size:13.5px;color:var(--c-ink-3);line-height:1.8;margin:0;}
.ys-topic-side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}

/* feature matrix */
.ys-feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.ys-feature{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:24px 22px;
  transition:all .25s ease;box-shadow:var(--shadow-1);
}
.ys-feature:hover{border-color:rgba(216,69,94,.4);box-shadow:var(--shadow-2);transform:translateY(-2px);}
.ys-feature .ico{
  width:42px;height:42px;border-radius:10px;background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.ys-feature .ico svg{width:21px;height:21px;}
.ys-feature h3{font-size:16px;margin-bottom:8px;}
.ys-feature p{font-size:13.5px;color:var(--c-ink-3);line-height:1.8;margin:0;}

/* safety */
.ys-safety{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:start;}
.ys-safety-list{display:grid;grid-template-columns:1fr 1fr;gap:26px;}
.ys-safety-item{display:flex;gap:12px;}
.ys-safety-item .ico{
  width:36px;height:36px;border-radius:9px;background:var(--c-bg-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;flex:none;
}
.ys-safety-item .ico svg{width:18px;height:18px;}
.ys-safety-item h3{font-size:15.5px;margin-bottom:6px;}
.ys-safety-item p{font-size:13.5px;color:var(--c-ink-3);line-height:1.8;margin:0;}
.ys-checklist{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:26px 24px;box-shadow:var(--shadow-1);}
.ys-checklist h3{font-size:16px;margin-bottom:16px;}
.ys-checklist li{display:flex;gap:10px;font-size:14px;color:var(--c-ink-2);padding:9px 0;border-bottom:1px dashed var(--c-line);line-height:1.75;}
.ys-checklist li:last-child{border-bottom:none;}
.ys-checklist .ck{color:var(--c-primary);font-weight:700;flex:none;}

/* audience */
.ys-aud-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.ys-aud{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:20px;
  display:flex;gap:14px;align-items:flex-start;transition:all .25s ease;
}
.ys-aud:hover{border-color:var(--c-primary);box-shadow:var(--shadow-1);}
.ys-aud .ico{
  width:38px;height:38px;border-radius:10px;background:var(--c-bg-warm);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;flex:none;
}
.ys-aud .ico svg{width:19px;height:19px;}
.ys-aud b{display:block;font-size:15px;color:var(--c-ink);margin-bottom:4px;font-weight:600;}
.ys-aud span{font-size:12.5px;color:var(--c-ink-3);line-height:1.7;display:block;}

/* channels */
.ys-channel-list{display:grid;gap:16px;}
.ys-channel{
  display:flex;align-items:center;gap:20px;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-md);padding:22px 26px;transition:all .25s ease;box-shadow:var(--shadow-1);
}
.ys-channel:hover{border-color:var(--c-primary);box-shadow:var(--shadow-2);transform:translateY(-2px);color:var(--c-ink-2);}
.ys-channel .ico{
  width:48px;height:48px;border-radius:12px;background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;flex:none;
}
.ys-channel .ico svg{width:23px;height:23px;}
.ys-channel .txt{flex:1;}
.ys-channel .txt b{display:block;font-size:16.5px;color:var(--c-ink);margin-bottom:5px;font-weight:700;}
.ys-channel .txt span{font-size:13.5px;color:var(--c-ink-3);line-height:1.75;display:block;}
.ys-channel .arrow{font-size:20px;color:var(--c-primary);flex:none;}

/* cms updates */
.ys-updates{display:grid;grid-template-columns:1.62fr 1fr;gap:36px;align-items:start;}
.ys-post-list{display:grid;gap:0;}
.ys-post{
  display:block;padding:22px 0;border-bottom:1px solid var(--c-line);transition:background .25s ease;
}
.ys-post:first-child{padding-top:0;}
.ys-post:hover{color:var(--c-ink-2);}
.ys-post:hover .ys-post-title{color:var(--c-primary);}
.ys-post-top{display:flex;align-items:center;gap:12px;margin-bottom:9px;flex-wrap:wrap;}
.ys-post-title{font-size:17px;font-weight:600;color:var(--c-ink);line-height:1.6;margin:0 0 8px;transition:color .25s ease;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.ys-post-sum{font-size:13.5px;color:var(--c-ink-3);line-height:1.85;margin:0 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.ys-badge{
  font-size:11.5px;font-weight:600;color:var(--c-primary-dark);background:var(--c-primary-soft);
  padding:3px 10px;border-radius:var(--r-pill);display:inline-block;
}
.ys-time{font-size:12.5px;color:var(--c-ink-3);display:inline-flex;align-items:center;gap:6px;}
.ys-time::before{content:"";width:4px;height:4px;border-radius:50%;background:rgba(232,134,60,.55);display:inline-block;}
.ys-read{font-size:13px;font-weight:600;color:var(--c-primary);}
.ys-aside{background:var(--c-bg-warm);border:1px solid var(--c-line);border-radius:var(--r-md);padding:24px 22px;}
.ys-aside h3{font-size:15.5px;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--c-line);}
.ys-aside li{display:flex;gap:12px;padding:11px 0;border-bottom:1px dashed var(--c-line);font-size:13.5px;}
.ys-aside li:last-child{border-bottom:none;}
.ys-aside .idx{font-weight:800;color:var(--c-primary);font-size:13px;flex:none;line-height:1.8;}
.ys-aside a{color:var(--c-ink-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.ys-aside .empty-tip{font-size:13px;color:var(--c-ink-3);line-height:1.8;margin:0;}
.ys-empty{
  text-align:center;padding:44px 20px;background:var(--c-bg-warm);border:1px dashed var(--c-line);
  border-radius:var(--r-md);
}
.ys-empty svg{width:72px;height:72px;margin:0 auto 14px;color:#D9CFD4;}
.ys-empty p{font-size:14px;color:var(--c-ink-3);margin:0 0 16px;}

/* editor picks */
.ys-editor-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.ys-editor-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:24px 22px 22px;
  position:relative;transition:all .25s ease;display:flex;flex-direction:column;
}
.ys-editor-card::before{content:"";position:absolute;left:22px;top:0;width:38px;height:3px;background:var(--c-primary);border-radius:0 0 3px 3px;}
.ys-editor-card:hover{border-color:rgba(216,69,94,.4);box-shadow:var(--shadow-2);transform:translateY(-2px);}
.ys-editor-card h3{font-size:16px;line-height:1.6;margin:14px 0 12px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.ys-editor-card:hover h3{color:var(--c-primary);}
.ys-editor-card p{font-size:13.5px;color:var(--c-ink-3);line-height:1.8;margin:0 0 16px;flex:1;}
.ys-editor-card .foot{font-size:12.5px;color:var(--c-ink-3);display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--c-line);padding-top:12px;}

/* metrics */
.ys-metric-grid{display:grid;grid-template-columns:repeat(6,1fr);border-top:1px solid var(--c-line);border-left:1px solid var(--c-line);}
.ys-metric{padding:22px 18px;border-right:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.ys-metric b{display:block;font-size:23px;font-weight:800;color:var(--c-ink);line-height:1.2;}
.ys-metric b em{font-style:normal;font-size:13px;color:var(--c-primary);margin-left:3px;font-weight:600;}
.ys-metric span{display:block;font-size:12px;color:var(--c-ink-3);margin-top:6px;}

/* faq */
.ys-faq{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;}
.ys-faq details{border-bottom:1px solid var(--c-line);}
.ys-faq details:last-child{border-bottom:none;}
.ys-faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:15.5px;font-weight:600;color:var(--c-ink);transition:background .25s ease;
}
.ys-faq summary::-webkit-details-marker{display:none;}
.ys-faq summary:hover{background:var(--c-bg-warm);}
.ys-faq summary .sign{
  font-size:20px;font-weight:400;color:var(--c-ink-3);transition:transform .25s ease,color .25s ease;flex:none;line-height:1;
}
.ys-faq details[open] summary .sign{transform:rotate(45deg);color:var(--c-primary);}
.ys-faq details[open] summary{color:var(--c-primary-dark);}
.ys-faq .ans{padding:0 24px 22px;font-size:14.5px;color:var(--c-ink-2);line-height:1.9;}

/* cta */
.ys-cta{
  position:relative;overflow:hidden;background:var(--c-primary);color:#fff;padding:64px 0;
}
.ys-cta::before,.ys-cta::after{
  content:"";position:absolute;border-radius:50%;border:1px solid rgba(255,255,255,.22);
}
.ys-cta::before{width:340px;height:340px;right:-90px;bottom:-160px;}
.ys-cta::after{width:200px;height:200px;right:70px;bottom:-130px;}
.ys-cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.ys-cta h2{color:#fff;font-size:26px;line-height:1.5;margin-bottom:10px;}
.ys-cta p{color:rgba(255,255,255,.86);font-size:14.5px;margin:0;line-height:1.8;}
.ys-cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.ys-cta .btn-white{background:#fff;color:var(--c-primary-dark);border-color:#fff;box-shadow:0 12px 26px -14px rgba(0,0,0,.5);}
.ys-cta .btn-white:hover{background:#FDEDF0;color:var(--c-primary-dark);transform:translateY(-1px);}
.ys-cta .btn-ghost-dark{border-color:rgba(255,255,255,.65);}

/* footer */
.ys-footer{background:#211D27;color:rgba(255,255,255,.66);padding:56px 0 0;font-size:13px;}
.ys-footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;}
.ys-footer h4{color:#fff;font-size:14px;margin-bottom:16px;font-weight:600;}
.ys-footer .ys-logo{color:#fff;margin-bottom:14px;}
.ys-footer .ys-logo-name{color:#fff;}
.ys-footer .ys-logo-sub{color:rgba(255,255,255,.5);}
.ys-footer p{line-height:2;margin:0 0 14px;color:rgba(255,255,255,.58);}
.ys-footer-links{display:flex;flex-direction:column;gap:10px;}
.ys-footer-links a{color:rgba(255,255,255,.66);font-size:13px;line-height:1.8;}
.ys-footer-links a:hover{color:var(--c-primary);}
.ys-tagcloud{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px;}
.ys-tagcloud span{
  font-size:12px;padding:4px 10px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.07);color:rgba(255,255,255,.62);
}
.ys-footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12.5px;color:rgba(255,255,255,.45);
}
.ys-footer-bottom a{color:rgba(255,255,255,.45);}
.ys-footer-bottom a:hover{color:var(--c-primary);}

/* ============ responsive ============ */
@media (max-width:1023px){
  .ys-nav-links{display:none;}
  .ys-ghost-link{display:none;}
  .ys-burger{display:flex;}
  .ys-hero-inner{grid-template-columns:1fr;gap:36px;padding-top:48px;padding-bottom:52px;}
  .ys-hero h1{font-size:31px;}
  .ys-hero-poster{max-width:560px;}
  .ys-pain-grid{grid-template-columns:1fr 1fr;}
  .ys-pain-item{padding:22px 20px;border-bottom:1px solid var(--c-line);}
  .ys-pain-item:nth-child(2n){border-right:none;}
  .ys-story-grid{grid-template-columns:1fr 1fr;}
  .ys-stats-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .ys-steps{grid-template-columns:1fr 1fr;gap:28px;}
  .ys-step::after{display:none;}
  .ys-topic-grid{grid-template-columns:1fr;}
  .ys-feature-grid{grid-template-columns:1fr 1fr;}
  .ys-safety{grid-template-columns:1fr;gap:30px;}
  .ys-aud-grid{grid-template-columns:1fr 1fr;}
  .ys-updates{grid-template-columns:1fr;gap:30px;}
  .ys-editor-grid{grid-template-columns:1fr 1fr;}
  .ys-metric-grid{grid-template-columns:repeat(3,1fr);}
  .ys-footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .ys-compare{grid-template-columns:1fr;}
}
@media (max-width:767px){
  .ys-section{padding:52px 0;}
  .ys-hero h1{font-size:27px;}
  .ys-hero-desc{font-size:15px;}
  .ys-story-grid{grid-template-columns:1fr;}
  .ys-feature-grid{grid-template-columns:1fr;}
  .ys-aud-grid{grid-template-columns:1fr;}
  .ys-editor-grid{grid-template-columns:1fr;}
  .ys-safety-list{grid-template-columns:1fr;}
  .ys-channel{flex-wrap:wrap;gap:14px;padding:20px;}
  .ys-channel .txt{flex-basis:calc(100% - 68px);}
  .ys-channel .arrow{display:none;}
  .ys-cta-inner{flex-direction:column;align-items:flex-start;}
  .ys-cta h2{font-size:22px;}
  .ys-faq summary{font-size:14.5px;padding:16px 18px;}
  .ys-faq .ans{padding:0 18px 18px;}
}
@media (max-width:520px){
  .ys-container{padding:0 16px;}
  .ys-pain-grid{grid-template-columns:1fr;}
  .ys-pain-item{border-right:none !important;}
  .ys-stats-grid{grid-template-columns:1fr 1fr;gap:22px;}
  .ys-stat b{font-size:31px;}
  .ys-steps{grid-template-columns:1fr;}
  .ys-metric-grid{grid-template-columns:1fr 1fr;}
  .ys-footer-grid{grid-template-columns:1fr;gap:28px;}
  .ys-nav{height:64px;}
  .ys-header.is-scrolled .ys-nav{height:58px;}
  .ys-logo-name{font-size:17px;}
  .ys-hero-actions .btn-primary,.ys-hero-actions .btn-ghost-dark{width:100%;}
  .ys-cta-actions .btn-primary,.ys-cta-actions .btn-ghost-dark{width:100%;}
}

/* roulang page: article */
:root{
  --c-primary:#D8455E;
  --c-primary-dark:#B3334A;
  --c-primary-soft:#FDEDF0;
  --c-accent:#E8863C;
  --c-ink:#211D27;
  --c-ink-2:#4B4553;
  --c-ink-3:#7E7788;
  --c-line:#ECE5E8;
  --c-bg:#FFFFFF;
  --c-bg-warm:#FBF7F6;
  --c-bg-soft:#F5EFF1;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(33,29,39,.05);
  --shadow-2:0 8px 24px -12px rgba(33,29,39,.16);
  --shadow-cta:0 10px 22px -10px rgba(216,69,94,.55);
  --container:1200px;
  --read:740px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body.ys-body{
  margin:0;padding:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;line-height:1.9;letter-spacing:.01em;
  color:var(--c-ink-2);background:var(--c-bg);
}
img{max-width:100%;display:block;}
a{color:var(--c-ink-2);text-decoration:none;transition:color .25s ease;}
a:hover{color:var(--c-primary);}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding-left:1.2em;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.ys-container{max-width:var(--container);margin:0 auto;padding:0 20px;}
.ys-skip{
  position:absolute;left:-9999px;top:0;background:var(--c-primary);color:#fff;
  padding:10px 18px;border-radius:0 0 var(--r-sm) 0;z-index:999;font-size:14px;
}
.ys-skip:focus{left:0;color:#fff;}
/* ================= header ================= */
.ys-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease;
}
.ys-header.is-scrolled{box-shadow:var(--shadow-1);}
.ys-nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .25s ease;}
.ys-header.is-scrolled .ys-nav{height:60px;}
.ys-logo{display:flex;align-items:center;gap:10px;color:var(--c-ink);flex:none;}
.ys-logo:hover{color:var(--c-ink);}
.ys-logo svg{width:32px;height:32px;flex:none;}
.ys-logo-text{display:flex;flex-direction:column;line-height:1.2;}
.ys-logo-name{font-size:19px;font-weight:800;letter-spacing:.02em;}
.ys-logo-sub{font-size:11px;color:var(--c-ink-3);font-weight:400;letter-spacing:.04em;}
.ys-nav-links{display:flex;align-items:center;gap:26px;}
.ys-nav-links a{position:relative;font-size:15px;color:var(--c-ink-2);padding:6px 0;}
.ys-nav-links a::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--c-primary);
  transition:right .25s ease;
}
.ys-nav-links a:hover{color:var(--c-primary);}
.ys-nav-links a:hover::after,.ys-nav-links a.is-active::after{right:0;}
.ys-nav-links a.is-active{color:var(--c-primary);font-weight:600;}
.ys-nav-right{display:flex;align-items:center;gap:12px;}
.ys-burger{
  display:none;width:40px;height:40px;border:1px solid var(--c-line);border-radius:var(--r-sm);
  background:#fff;cursor:pointer;position:relative;padding:0;
}
.ys-burger span{
  position:absolute;left:11px;right:11px;top:50%;margin-top:-1px;height:2px;background:var(--c-ink);
  display:block;transition:background .25s ease;
}
.ys-burger span::before,.ys-burger span::after{
  content:"";position:absolute;left:0;right:0;height:2px;background:var(--c-ink);transition:transform .25s ease,top .25s ease;
}
.ys-burger span::before{top:-6px;}
.ys-burger span::after{top:6px;}
body.is-open .ys-burger span{background:transparent;}
body.is-open .ys-burger span::before{top:0;transform:rotate(45deg);}
body.is-open .ys-burger span::after{top:0;transform:rotate(-45deg);}
.ys-overlay{
  position:fixed;inset:0;background:rgba(33,29,39,.45);opacity:0;visibility:hidden;
  transition:opacity .3s ease,visibility .3s ease;z-index:140;
}
body.is-open .ys-overlay{opacity:1;visibility:visible;}
body.is-open{overflow:hidden;}
.ys-drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;background:#fff;z-index:150;
  transform:translateX(100%);transition:transform .3s ease;display:flex;flex-direction:column;
  padding:26px 22px;box-shadow:-18px 0 40px -24px rgba(33,29,39,.4);overflow-y:auto;
}
body.is-open .ys-drawer{transform:translateX(0);}
.ys-drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.ys-drawer-title{font-size:15px;font-weight:700;color:var(--c-ink);}
.ys-drawer-close{
  width:38px;height:38px;border:1px solid var(--c-line);border-radius:var(--r-sm);background:#fff;
  font-size:18px;color:var(--c-ink-2);cursor:pointer;line-height:1;
}
.ys-drawer-close:hover{color:var(--c-primary);border-color:var(--c-primary);}
.ys-drawer nav{display:flex;flex-direction:column;gap:4px;}
.ys-drawer nav a{padding:12px 8px;border-bottom:1px solid var(--c-line);font-size:15px;color:var(--c-ink);}
.ys-drawer nav a.is-active{color:var(--c-primary);font-weight:600;}
.ys-drawer-foot{margin-top:auto;padding-top:24px;}
.ys-drawer-foot .btn-primary{width:100%;display:flex;}
/* ================= buttons ================= */
.btn-primary,.btn-ghost,.btn-ghost-dark{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;padding:14px 26px;border-radius:var(--r-sm);
  cursor:pointer;transition:all .25s ease;border:1.5px solid transparent;text-align:center;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--shadow-cta);}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 14px 26px -12px rgba(216,69,94,.6);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);border-color:var(--c-primary-dark);}
.btn-ghost-dark{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.5);color:#fff;}
.btn-ghost-dark:hover{background:rgba(255,255,255,.16);color:#fff;border-color:#fff;}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--c-primary);border-bottom:1px solid transparent;transition:all .25s ease;
}
.btn-link:hover{color:var(--c-primary-dark);border-bottom-color:var(--c-primary-dark);}
/* ================= article head ================= */
.ys-main{display:block;}
.ys-crumbbar{
  background:var(--c-bg-warm);border-bottom:1px solid var(--c-line);
}
.ys-crumbbar-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:14px 0;font-size:13px;color:var(--c-ink-3);flex-wrap:wrap;
}
.ys-crumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;min-width:0;}
.ys-crumb a{color:var(--c-ink-3);}
.ys-crumb a:hover{color:var(--c-primary);}
.ys-crumb .sep{color:#CFC6CB;}
.ys-crumb .cur{color:var(--c-ink-2);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.ys-badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;
  padding:5px 12px;border-radius:var(--r-pill);background:var(--c-primary-soft);color:var(--c-primary-dark);
  white-space:nowrap;
}
.ys-badge-line{
  background:transparent;border:1px solid var(--c-accent);color:#B96A2A;
}
.ys-article-head{padding:42px 0 30px;background:var(--c-bg);}
.ys-article-title{
  font-family:"Noto Serif SC","Songti SC",-apple-system,"PingFang SC",serif;
  font-size:34px;line-height:1.42;font-weight:700;color:var(--c-ink);letter-spacing:-.005em;
  margin:0 0 16px;max-width:900px;
}
.ys-article-dek{
  font-size:15px;line-height:1.85;color:var(--c-ink-3);max-width:820px;margin-bottom:22px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.ys-article-meta{
  display:flex;align-items:center;gap:18px;flex-wrap:wrap;font-size:13.5px;color:var(--c-ink-3);
  padding-top:18px;border-top:1px solid var(--c-line);
}
.ys-meta-author{display:flex;align-items:center;gap:9px;color:var(--c-ink-2);font-weight:600;}
.ys-author-avatar{
  width:28px;height:28px;border-radius:50%;background:var(--c-primary-soft);color:var(--c-primary-dark);
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex:none;
}
.ys-meta-dot{width:4px;height:4px;border-radius:50%;background:rgba(232,134,60,.55);display:inline-block;margin-right:7px;vertical-align:middle;}
.ys-article-figure{margin:0 0 8px;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--c-line);background:var(--c-bg-soft);}
.ys-article-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease;}
.ys-article-figure:hover img{transform:scale(1.02);}
.ys-article-figure figcaption{
  font-size:12.5px;color:var(--c-ink-3);padding:10px 16px;background:var(--c-bg-warm);
  border-top:1px solid var(--c-line);
}
/* ================= read layout ================= */
.ys-read-grid{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:52px;
  padding:40px 0 12px;align-items:start;
}
.ys-prose{
  max-width:var(--read);font-size:16px;line-height:1.95;color:var(--c-ink-2);letter-spacing:.01em;
}
.ys-prose p{margin:0 0 1.2em;}
.ys-prose h2{
  font-size:24px;line-height:1.5;font-weight:700;color:var(--c-ink);
  margin:2.2em 0 .8em;padding-left:12px;border-left:3px solid var(--c-primary);
}
.ys-prose h3{font-size:18px;line-height:1.6;font-weight:600;color:var(--c-ink);margin:1.8em 0 .6em;}
.ys-prose h4{font-size:16px;font-weight:600;color:var(--c-ink);margin:1.5em 0 .5em;}
.ys-prose ul,.ys-prose ol{margin:0 0 1.2em;padding-left:1.4em;}
.ys-prose li{margin-bottom:.5em;}
.ys-prose ul li::marker{color:var(--c-primary);}
.ys-prose ol li::marker{color:var(--c-primary);font-weight:700;}
.ys-prose blockquote{
  margin:1.6em 0;padding:16px 20px;background:var(--c-bg-soft);border-left:3px solid var(--c-primary);
  border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--c-ink-2);
}
.ys-prose blockquote p:last-child{margin-bottom:0;}
.ys-prose img{border-radius:var(--r-md);margin:1.4em 0;width:100%;height:auto;object-fit:cover;background:var(--c-bg-soft);}
.ys-prose a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.ys-prose a:hover{color:var(--c-primary-dark);}
.ys-prose strong{color:var(--c-ink);font-weight:600;}
.ys-prose hr{border:0;border-top:1px solid var(--c-line);margin:2em 0;}
.ys-prose table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:14.5px;}
.ys-prose th,.ys-prose td{border:1px solid var(--c-line);padding:10px 12px;text-align:left;}
.ys-prose th{background:var(--c-bg-warm);color:var(--c-ink);font-weight:600;}
/* key points */
.ys-keypoints{
  margin:34px 0 0;background:var(--c-bg-soft);border-radius:var(--r-md);padding:24px 26px;
  border:1px solid var(--c-line);
}
.ys-keypoints h3{
  font-size:16px;font-weight:700;color:var(--c-ink);margin:0 0 14px;
  display:flex;align-items:center;gap:8px;
}
.ys-keypoints h3::before{content:"";width:14px;height:3px;background:var(--c-primary);border-radius:2px;}
.ys-keypoints ol{list-style:none;margin:0;padding:0;counter-reset:kp;}
.ys-keypoints li{
  counter-increment:kp;position:relative;padding-left:34px;font-size:14.5px;line-height:1.85;
  color:var(--c-ink-2);margin-bottom:12px;
}
.ys-keypoints li:last-child{margin-bottom:0;}
.ys-keypoints li::before{
  content:"0" counter(kp);position:absolute;left:0;top:1px;font-size:13px;font-weight:800;
  color:var(--c-accent);letter-spacing:.02em;
}
/* ================= sidebar ================= */
.ys-side{position:sticky;top:92px;display:flex;flex-direction:column;gap:20px;}
.ys-side-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:20px 20px 18px;
  box-shadow:var(--shadow-1);
}
.ys-side-title{
  font-size:14px;font-weight:700;color:var(--c-ink);margin:0 0 14px;
  display:flex;align-items:center;gap:8px;
}
.ys-side-title::before{content:"";width:3px;height:14px;background:var(--c-primary);border-radius:2px;}
.ys-kwlist{display:flex;flex-wrap:wrap;gap:8px;}
.ys-kwlist a{
  font-size:12.5px;padding:5px 12px;border-radius:var(--r-pill);background:var(--c-bg-warm);
  border:1px solid var(--c-line);color:var(--c-ink-2);transition:all .25s ease;
}
.ys-kwlist a:hover{background:var(--c-primary-soft);border-color:rgba(216,69,94,.4);color:var(--c-primary-dark);}
.ys-side-list{list-style:none;margin:0;padding:0;counter-reset:sl;}
.ys-side-list li{
  counter-increment:sl;position:relative;padding:11px 0 11px 26px;border-bottom:1px dashed var(--c-line);
  font-size:14px;line-height:1.7;
}
.ys-side-list li:last-child{border-bottom:0;padding-bottom:0;}
.ys-side-list li::before{
  content:counter(sl);position:absolute;left:0;top:12px;font-size:12px;font-weight:800;color:var(--c-primary);
}
.ys-side-list a{color:var(--c-ink-2);}
.ys-side-list a:hover{color:var(--c-primary);}
.ys-side-note{font-size:13.5px;line-height:1.85;color:var(--c-ink-3);margin:0;}
.ys-side-cta{background:var(--c-bg-warm);}
.ys-side-cta p{font-size:13.5px;line-height:1.8;color:var(--c-ink-2);margin:0 0 14px;}
.ys-side-cta .btn-primary{width:100%;display:flex;}
/* ================= tag bar / actions ================= */
.ys-tagbar{
  display:flex;flex-wrap:wrap;gap:10px;padding:26px 0 0;margin-top:34px;border-top:1px solid var(--c-line);
}
.ys-tag{
  font-size:12.5px;padding:6px 14px;border-radius:var(--r-pill);background:var(--c-bg-warm);
  border:1px solid var(--c-line);color:var(--c-ink-2);
}
.ys-tag:hover{background:var(--c-primary-soft);border-color:rgba(216,69,94,.4);color:var(--c-primary-dark);}
.ys-actionbar{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:18px;padding:16px 18px;border:1px solid var(--c-line);border-radius:var(--r-md);
  background:var(--c-bg-warm);
}
.ys-actionbar span{font-size:13.5px;color:var(--c-ink-3);}
.ys-action-btn{
  display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:600;color:var(--c-ink-2);
  padding:8px 16px;border-radius:var(--r-pill);border:1px solid var(--c-line);background:#fff;
  cursor:pointer;transition:all .25s ease;
}
.ys-action-btn:hover{color:var(--c-primary);border-color:rgba(216,69,94,.45);background:var(--c-primary-soft);}
.ys-action-btn:active{transform:translateY(1px);}
/* ================= sections ================= */
.ys-section{padding:64px 0;border-top:1px solid var(--c-line);}
.ys-section-warm{background:var(--c-bg-warm);}
.ys-section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:28px;}
.ys-section-title{font-size:24px;font-weight:700;color:var(--c-ink);line-height:1.45;margin:0;}
.ys-section-title span{color:var(--c-primary);}
.ys-section-desc{font-size:14px;color:var(--c-ink-3);margin:8px 0 0;line-height:1.8;}
/* related cards */
.ys-rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.ys-rel-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--shadow-1);transition:all .25s ease;height:100%;
}
.ys-rel-card:hover{border-color:rgba(216,69,94,.4);box-shadow:var(--shadow-2);transform:translateY(-2px);}
.ys-rel-thumb{overflow:hidden;background:var(--c-bg-soft);}
.ys-rel-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .35s ease;}
.ys-rel-card:hover .ys-rel-thumb img{transform:scale(1.03);}
.ys-rel-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:10px;flex:1;}
.ys-rel-body h3{
  font-size:16px;line-height:1.6;font-weight:600;color:var(--c-ink);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.ys-rel-body p{
  font-size:13.5px;line-height:1.8;color:var(--c-ink-3);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.ys-rel-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;font-size:12.5px;color:var(--c-ink-3);}
.ys-rel-foot .read{color:var(--c-primary);font-weight:600;}
/* safety list block */
.ys-safety-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.ys-safety-item{
  background:#fff;border:1px solid var(--c-line);border-left:3px solid var(--c-primary);
  border-radius:var(--r-sm);padding:20px 22px;box-shadow:var(--shadow-1);transition:all .25s ease;
}
.ys-safety-item:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.ys-safety-item h3{font-size:15.5px;font-weight:700;color:var(--c-ink);margin:0 0 8px;}
.ys-safety-item p{font-size:13.5px;line-height:1.85;color:var(--c-ink-3);margin:0;}
/* back & cta */
.ys-backbar{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;padding:30px 0;border-top:1px solid var(--c-line);}
.ys-backlink{font-size:14px;font-weight:600;color:var(--c-ink-2);display:inline-flex;align-items:center;gap:7px;}
.ys-backlink:hover{color:var(--c-primary);}
.ys-cta-banner{
  position:relative;overflow:hidden;background:var(--c-primary);color:#fff;border-radius:var(--r-lg);
  padding:38px 40px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  box-shadow:var(--shadow-2);margin-bottom:64px;
}
.ys-cta-banner::after{
  content:"";position:absolute;right:-70px;bottom:-90px;width:260px;height:260px;border-radius:50%;
  border:36px solid rgba(255,255,255,.12);pointer-events:none;
}
.ys-cta-banner h2{font-size:22px;font-weight:700;margin:0 0 8px;color:#fff;position:relative;z-index:1;}
.ys-cta-banner p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.86);margin:0;position:relative;z-index:1;}
.ys-cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:1;}
.ys-cta-banner .btn-primary{background:#fff;color:var(--c-primary-dark);box-shadow:0 10px 22px -12px rgba(0,0,0,.4);}
.ys-cta-banner .btn-primary:hover{background:#FFF4F6;color:var(--c-primary-dark);}
/* not found */
.ys-notfound{
  max-width:640px;margin:20px auto 0;text-align:center;padding:56px 28px;
  background:var(--c-bg-warm);border:1px solid var(--c-line);border-radius:var(--r-lg);
}
.ys-notfound h2{font-size:22px;color:var(--c-ink);font-weight:700;margin-bottom:12px;}
.ys-notfound p{font-size:14.5px;color:var(--c-ink-3);line-height:1.9;margin-bottom:22px;}
/* ================= footer ================= */
.ys-footer{background:#211D27;color:rgba(255,255,255,.72);padding:56px 0 0;font-size:14px;}
.ys-footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1);
}
.ys-footer .ys-logo-name{color:#fff;}
.ys-footer .ys-logo-sub{color:rgba(255,255,255,.5);}
.ys-footer h4{font-size:14px;color:#fff;margin:0 0 14px;font-weight:600;letter-spacing:.02em;}
.ys-footer-links{display:flex;flex-direction:column;gap:10px;}
.ys-footer-links a{color:rgba(255,255,255,.68);font-size:13.5px;}
.ys-footer-links a:hover{color:var(--c-primary);}
.ys-footer p{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.6);margin:14px 0 0;max-width:330px;}
.ys-tagcloud{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.ys-tagcloud span{
  font-size:12px;padding:4px 10px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.08);color:rgba(255,255,255,.72);
}
.ys-footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 26px;font-size:13px;color:rgba(255,255,255,.5);line-height:2;
}
/* ================= responsive ================= */
@media (max-width:1100px){
  .ys-read-grid{grid-template-columns:minmax(0,1fr) 280px;gap:36px;}
}
@media (max-width:1024px){
  .ys-nav-links{display:none;}
  .ys-burger{display:block;}
  .ys-nav-right .btn-primary{display:none;}
  .ys-read-grid{grid-template-columns:minmax(0,1fr);gap:32px;}
  .ys-side{position:static;}
  .ys-rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .ys-safety-grid{grid-template-columns:1fr;}
  .ys-footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .ys-article-head{padding:30px 0 24px;}
  .ys-article-title{font-size:26px;line-height:1.45;}
  .ys-article-dek{font-size:14px;}
  .ys-section{padding:48px 0;}
  .ys-section-title{font-size:20px;}
  .ys-rel-grid{grid-template-columns:1fr;}
  .ys-cta-banner{padding:28px 24px;border-radius:var(--r-md);}
  .ys-cta-banner h2{font-size:19px;}
  .ys-prose h2{font-size:20px;}
  .ys-prose h3{font-size:17px;}
  .ys-crumb .cur{max-width:200px;}
  .ys-keypoints{padding:20px 18px;}
}
@media (max-width:520px){
  .ys-container{padding:0 16px;}
  .ys-nav{height:64px;gap:12px;}
  .ys-logo-name{font-size:17px;}
  .ys-logo-sub{font-size:10px;}
  .ys-nav-right .btn-sm{padding:9px 14px;font-size:13px;}
  .ys-nav-right .btn-primary{display:none;}
  .ys-article-title{font-size:23px;}
  .ys-article-meta{gap:12px;font-size:12.5px;}
  .ys-footer-grid{grid-template-columns:1fr;}
  .ys-footer-bottom{font-size:12px;padding:16px 0 22px;}
  .ys-actionbar{flex-direction:column;align-items:flex-start;}
  .ys-cta-actions{width:100%;}
  .ys-cta-actions .btn-primary,.ys-cta-actions .btn-ghost-dark{flex:1;}
  .ys-section-head{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category1 */
:root{
  --c-primary:#D8455E;
  --c-primary-dark:#B3334A;
  --c-primary-soft:#FDEDF0;
  --c-accent:#E8863C;
  --c-ink:#211D27;
  --c-ink-2:#4B4553;
  --c-ink-3:#7E7788;
  --c-line:#ECE5E8;
  --c-bg:#FFFFFF;
  --c-bg-warm:#FBF7F6;
  --c-bg-soft:#F5EFF1;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(33,29,39,.05);
  --shadow-2:0 8px 24px -12px rgba(33,29,39,.16);
  --shadow-cta:0 10px 22px -10px rgba(216,69,94,.55);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body.ys-body{
  margin:0;padding:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;line-height:1.9;letter-spacing:.01em;
  color:var(--c-ink-2);background:var(--c-bg);
}
img{max-width:100%;display:block;}
a{color:var(--c-ink-2);text-decoration:none;transition:color .25s ease;}
a:hover{color:var(--c-primary);}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 1.1em;}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:1.42;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.ys-skip{position:absolute;left:-9999px;top:0;background:var(--c-primary);color:#fff;padding:10px 18px;border-radius:0 0 var(--r-sm) 0;z-index:999;}
.ys-skip:focus{left:0;}
.ys-container{max-width:var(--container);margin:0 auto;padding:0 20px;}

/* ============ header / nav ============ */
.ys-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease;
}
.ys-header.is-scrolled{box-shadow:var(--shadow-1);}
.ys-nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .25s ease;}
.ys-header.is-scrolled .ys-nav{height:60px;}
.ys-logo{display:flex;align-items:center;gap:10px;color:var(--c-ink);}
.ys-logo:hover{color:var(--c-ink);}
.ys-logo svg{width:32px;height:32px;flex:none;}
.ys-logo-text{display:flex;flex-direction:column;line-height:1.2;}
.ys-logo-name{font-size:19px;font-weight:800;letter-spacing:.02em;color:var(--c-ink);}
.ys-logo-sub{font-size:11px;color:var(--c-ink-3);font-weight:400;letter-spacing:.04em;}
.ys-nav-links{display:flex;align-items:center;gap:26px;}
.ys-nav-links a{position:relative;font-size:15px;color:var(--c-ink-2);padding:6px 0;}
.ys-nav-links a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--c-primary);transition:right .25s ease;}
.ys-nav-links a:hover{color:var(--c-primary);}
.ys-nav-links a:hover::after,.ys-nav-links a.is-active::after{right:0;}
.ys-nav-links a.is-active{color:var(--c-primary);font-weight:600;}
.ys-nav-right{display:flex;align-items:center;gap:16px;}
.ys-doc-link{font-size:14px;color:var(--c-ink-3);}
.ys-doc-link:hover{color:var(--c-primary);}
.ys-burger{
  display:none;width:42px;height:42px;border:1px solid var(--c-line);border-radius:var(--r-sm);
  background:#fff;cursor:pointer;position:relative;padding:0;
}
.ys-burger span{position:absolute;left:11px;right:11px;top:50%;margin-top:-1px;height:2px;background:var(--c-ink);border-radius:2px;transition:.25s;}
.ys-burger span::before,.ys-burger span::after{content:"";position:absolute;left:0;right:0;height:2px;background:var(--c-ink);border-radius:2px;transition:.25s;}
.ys-burger span::before{top:-7px;}
.ys-burger span::after{top:7px;}
body.is-open .ys-burger span{background:transparent;}
body.is-open .ys-burger span::before{top:0;transform:rotate(45deg);}
body.is-open .ys-burger span::after{top:0;transform:rotate(-45deg);}
.ys-overlay{position:fixed;inset:0;background:rgba(33,29,39,.45);opacity:0;visibility:hidden;transition:.3s ease;z-index:140;}
body.is-open .ys-overlay{opacity:1;visibility:visible;}
body.is-open{overflow:hidden;}
.ys-drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;background:#fff;z-index:150;
  transform:translateX(100%);transition:transform .3s ease;display:flex;flex-direction:column;
  padding:26px 22px;box-shadow:-18px 0 40px -24px rgba(33,29,39,.4);overflow-y:auto;
}
body.is-open .ys-drawer{transform:translateX(0);}
.ys-drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.ys-drawer-close{width:38px;height:38px;border:1px solid var(--c-line);border-radius:var(--r-sm);background:#fff;font-size:20px;color:var(--c-ink-2);cursor:pointer;line-height:1;}
.ys-drawer-close:hover{border-color:var(--c-primary);color:var(--c-primary);}
.ys-drawer nav{display:flex;flex-direction:column;gap:4px;}
.ys-drawer nav a{padding:12px 8px;border-bottom:1px solid var(--c-line);font-size:15px;color:var(--c-ink);}
.ys-drawer nav a.is-active{color:var(--c-primary);font-weight:600;}
.ys-drawer-foot{margin-top:auto;padding-top:24px;}
.ys-drawer-foot .btn-primary{width:100%;display:block;text-align:center;}

/* ============ buttons ============ */
.btn-primary,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;padding:14px 26px;border-radius:var(--r-sm);
  cursor:pointer;transition:all .25s ease;border:1.5px solid transparent;text-align:center;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--shadow-cta);}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 14px 26px -12px rgba(216,69,94,.6);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);border-color:var(--c-primary-dark);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);border-bottom:1px solid transparent;}
.btn-link:hover{color:var(--c-primary-dark);border-bottom-color:var(--c-primary-dark);}

/* ============ section 基础 ============ */
.ys-section{padding:72px 0;}
.ys-section.tone-warm{background:var(--c-bg-warm);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.ys-section.tone-white{background:var(--c-bg);border-top:1px solid var(--c-line);}
.ys-sec-head{max-width:760px;margin-bottom:32px;}
.ys-sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.ys-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;color:var(--c-primary-dark);background:var(--c-primary-soft);border-radius:var(--r-pill);padding:5px 13px;margin-bottom:14px;letter-spacing:.03em;}
.ys-eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--c-primary);display:block;}
.ys-h2{font-size:25px;line-height:1.45;letter-spacing:-.005em;}
.ys-sec-desc{margin-top:12px;font-size:15px;line-height:1.9;color:var(--c-ink-3);}

/* ============ 分类页头 ============ */
.cat-hero{background:var(--c-bg-warm);border-bottom:1px solid var(--c-line);position:relative;overflow:hidden;}
.cat-hero::before{
  content:"";position:absolute;top:-120px;right:-80px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(216,69,94,.13) 0%,rgba(216,69,94,0) 70%);
}
.cat-hero-inner{position:relative;display:grid;grid-template-columns:1.22fr .78fr;gap:44px;align-items:center;padding:40px 0 46px;}
.ys-crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--c-ink-3);margin-bottom:16px;}
.ys-crumb a{color:var(--c-ink-3);}
.ys-crumb a:hover{color:var(--c-primary);}
.ys-crumb span{color:#C6BEC7;}
.cat-hero h1{font-size:33px;line-height:1.36;letter-spacing:-.01em;font-weight:800;color:var(--c-ink);margin-bottom:16px;}
.cat-hero h1 em{font-style:normal;color:var(--c-primary);}
.cat-hero-lead{font-size:15.5px;line-height:1.95;color:var(--c-ink-2);max-width:620px;margin-bottom:14px;}
.cat-hero-lead:last-of-type{color:var(--c-ink-3);font-size:14.5px;}
.cat-hero-meta{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:20px;font-size:13.5px;color:var(--c-ink-3);}
.cat-hero-meta li{display:flex;align-items:center;gap:7px;}
.cat-hero-meta svg{width:16px;height:16px;flex:none;color:var(--c-primary);}
.cat-hero-media{position:relative;border-radius:var(--r-lg);overflow:hidden;background:var(--c-bg-soft);box-shadow:var(--shadow-2);aspect-ratio:4/3;max-height:270px;}
.cat-hero-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.cat-hero-media:hover img{transform:scale(1.03);}
.cat-hero-media figcaption{
  position:absolute;left:14px;bottom:14px;background:rgba(255,255,255,.94);border-radius:var(--r-pill);
  font-size:12px;color:var(--c-ink-2);padding:5px 13px;font-weight:500;
}

/* ============ 筛选条 ============ */
.filter-bar{padding:26px 0 30px;background:var(--c-bg);border-bottom:1px solid var(--c-line);}
.chip-row{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch;}
.chip-row::-webkit-scrollbar{height:4px;}
.chip-row::-webkit-scrollbar-thumb{background:#E5DCE0;border-radius:4px;}
.chip{
  flex:none;padding:8px 17px;border-radius:var(--r-pill);border:1px solid var(--c-line);background:#fff;
  font-size:14px;color:var(--c-ink-2);cursor:pointer;transition:all .25s ease;white-space:nowrap;
}
.chip:hover{border-color:rgba(216,69,94,.5);color:var(--c-primary);}
.chip.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff;box-shadow:var(--shadow-cta);}
.filter-note{margin-top:14px;font-size:13.5px;color:var(--c-ink-3);}

/* ============ 话题卡片 ============ */
.topic-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.topic-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-md);box-shadow:var(--shadow-1);overflow:hidden;transition:all .25s ease;
}
.topic-card:hover{border-color:rgba(216,69,94,.4);box-shadow:var(--shadow-2);transform:translateY(-2px);}
.topic-thumb{position:relative;aspect-ratio:16/10;background:var(--c-bg-soft);overflow:hidden;}
.topic-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.topic-card:hover .topic-thumb img{transform:scale(1.02);}
.topic-thumb .badge{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.95);box-shadow:var(--shadow-1);}
.topic-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;}
.topic-title{font-size:17.5px;font-weight:600;line-height:1.55;color:var(--c-ink);margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.topic-desc{font-size:14px;line-height:1.8;color:var(--c-ink-3);margin:0 0 16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.topic-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-top:auto;font-size:13px;color:var(--c-ink-3);}
.dot{display:inline-flex;align-items:center;gap:7px;}
.dot::before{content:"";width:4px;height:4px;border-radius:50%;background:rgba(232,134,60,.65);display:block;}
.badge{display:inline-block;font-size:12px;line-height:1.5;padding:3px 10px;border-radius:var(--r-pill);background:var(--c-primary-soft);color:var(--c-primary-dark);font-weight:500;}
.badge-city{background:var(--c-bg-soft);color:var(--c-ink-3);}
.topic-foot{display:flex;align-items:center;justify-content:space-between;margin-top:26px;gap:16px;flex-wrap:wrap;}
.topic-foot p{margin:0;font-size:13.5px;color:var(--c-ink-3);}

/* ============ 城市热区 ============ */
.city-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;}
.city-cell{
  display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 18px;
  border:1px solid var(--c-line);border-radius:var(--r-md);background:#fff;transition:all .25s ease;
}
.city-cell:hover{border-color:var(--c-primary);background:var(--c-bg-warm);transform:translateY(-2px);color:var(--c-ink);}
.city-name{display:flex;align-items:center;gap:9px;font-size:15px;font-weight:600;color:var(--c-ink);}
.city-name::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--c-primary);display:block;}
.city-cell:hover .city-name{color:var(--c-primary);}
.city-num{font-size:12.5px;color:var(--c-ink-3);white-space:nowrap;}

/* ============ FAQ ============ */
.faq-list{background:var(--c-bg-warm);border:1px solid var(--c-line);border-radius:var(--r-md);padding:0 24px;}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:19px 0;cursor:pointer;font-size:16px;font-weight:600;color:var(--c-ink);list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--c-primary);}
.faq-sign{flex:none;width:22px;height:22px;position:relative;transition:transform .25s ease;}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;background:var(--c-ink-3);border-radius:2px;transition:background .25s ease;}
.faq-sign::before{left:0;right:0;top:10px;height:2px;}
.faq-sign::after{top:0;bottom:0;left:10px;width:2px;}
.faq-item[open] .faq-sign{transform:rotate(45deg);}
.faq-item[open] .faq-sign::before,.faq-item[open] .faq-sign::after{background:var(--c-primary);}
.faq-answer{padding:0 0 20px;font-size:15px;line-height:1.95;color:var(--c-ink-2);max-width:820px;}

/* ============ 数据小条 ============ */
.mini-stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);background:#fff;}
.mini-stat{padding:24px 20px;border-left:1px solid var(--c-line);}
.mini-stat:first-child{border-left:0;}
.mini-num{font-size:25px;font-weight:700;color:var(--c-ink);line-height:1.2;}
.mini-num span{font-size:13px;font-weight:500;color:var(--c-ink-3);margin-left:4px;}
.mini-label{margin-top:6px;font-size:13px;color:var(--c-ink-3);}

/* ============ 相关阅读 ============ */
.read-list{border-top:1px solid var(--c-line);}
.read-list li{border-bottom:1px solid var(--c-line);}
.read-list a{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:17px 4px;font-size:15.5px;font-weight:500;color:var(--c-ink);transition:all .25s ease;}
.read-list a:hover{background:var(--c-bg-warm);color:var(--c-primary);padding-left:12px;padding-right:12px;}
.read-list time{font-size:13px;color:var(--c-ink-3);white-space:nowrap;font-weight:400;}

/* ============ CTA ============ */
.cta-band{background:var(--c-primary);color:#fff;position:relative;overflow:hidden;}
.cta-band::after{content:"";position:absolute;right:-70px;bottom:-110px;width:300px;height:300px;border-radius:50%;background:rgba(255,255,255,.09);}
.cta-band::before{content:"";position:absolute;left:-90px;top:-110px;width:220px;height:220px;border-radius:50%;background:rgba(255,255,255,.06);}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;padding:48px 0;flex-wrap:wrap;}
.cta-band h2{color:#fff;font-size:24px;line-height:1.45;}
.cta-band p{margin:10px 0 0;color:rgba(255,255,255,.85);font-size:14.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-band .btn-white{background:#fff;color:var(--c-primary-dark);border-color:#fff;box-shadow:0 12px 24px -14px rgba(33,29,39,.5);}
.cta-band .btn-white:hover{background:#fff;color:var(--c-primary-dark);transform:translateY(-1px);}
.cta-band .btn-ghost-w{background:transparent;border:1.5px solid rgba(255,255,255,.65);color:#fff;}
.cta-band .btn-ghost-w:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff;}

/* ============ footer ============ */
.ys-footer{background:#211D27;color:rgba(255,255,255,.68);padding:56px 0 0;font-size:13.5px;line-height:2;}
.ys-footer .ys-logo-name{color:#fff;}
.ys-footer .ys-logo-sub{color:rgba(255,255,255,.5);}
.ys-footer p{font-size:13.5px;color:rgba(255,255,255,.6);line-height:2;margin:14px 0 0;}
.ys-footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:36px;padding-bottom:38px;}
.ys-footer h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:14px;letter-spacing:.02em;}
.ys-footer-links a{display:block;color:rgba(255,255,255,.66);font-size:13.5px;line-height:2.1;}
.ys-footer-links a:hover{color:var(--c-primary);}
.ys-tagcloud{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.ys-tagcloud span{font-size:12px;padding:3px 10px;border-radius:var(--r-pill);background:rgba(255,255,255,.08);color:rgba(255,255,255,.72);}
.ys-footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0 22px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:12.5px;color:rgba(255,255,255,.5);}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  .ys-nav-links{gap:18px;}
  .cat-hero-inner{gap:32px;}
}
@media (max-width:1023px){
  .ys-nav-links{display:none;}
  .ys-doc-link,.ys-nav-right .btn-primary{display:none;}
  .ys-burger{display:block;}
  .cat-hero-inner{grid-template-columns:1fr;padding:32px 0 38px;}
  .cat-hero h1{font-size:29px;}
  .cat-hero-media{max-height:300px;}
  .ys-section{padding:54px 0;}
  .ys-h2{font-size:22px;}
  .city-grid{grid-template-columns:repeat(2,1fr);}
  .ys-footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .ys-container{padding:0 16px;}
  .topic-grid{grid-template-columns:1fr;}
  .mini-stats{grid-template-columns:1fr 1fr;}
  .mini-stat:nth-child(3){border-left:0;}
  .mini-stat:nth-child(n+3){border-top:1px solid var(--c-line);}
  .cta-inner{padding:40px 0;}
  .cta-band h2{font-size:21px;}
  .faq-list{padding:0 16px;}
  .read-list a{font-size:14.5px;gap:12px;}
  .cat-hero-meta{gap:8px 16px;font-size:13px;}
}
@media (max-width:520px){
  .cat-hero h1{font-size:25px;}
  .cat-hero-lead{font-size:14.5px;}
  .ys-logo-name{font-size:17px;}
  .ys-logo-sub{font-size:10.5px;}
  .city-grid{grid-template-columns:1fr;}
  .mini-stats{grid-template-columns:1fr;}
  .mini-stat{border-left:0;border-top:1px solid var(--c-line);}
  .mini-stat:first-child{border-top:0;}
  .ys-footer-grid{grid-template-columns:1fr;}
  .cta-actions{width:100%;}
  .cta-actions .btn-primary,.cta-actions .btn-ghost{width:100%;}
  .topic-foot{align-items:flex-start;}
}

/* roulang page: category2 */
:root{
  --c-primary:#D8455E;
  --c-primary-dark:#B3334A;
  --c-primary-soft:#FDEDF0;
  --c-accent:#E8863C;
  --c-ink:#211D27;
  --c-ink-2:#4B4553;
  --c-ink-3:#7E7788;
  --c-line:#ECE5E8;
  --c-bg:#FFFFFF;
  --c-bg-warm:#FBF7F6;
  --c-bg-soft:#F5EFF1;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(33,29,39,.05);
  --shadow-2:0 8px 24px -12px rgba(33,29,39,.16);
  --shadow-cta:0 10px 22px -10px rgba(216,69,94,.55);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body.ys-body{
  margin:0;padding:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;line-height:1.9;letter-spacing:.01em;
  color:var(--c-ink-2);background:var(--c-bg);
}
img{max-width:100%;display:block;}
a{color:var(--c-ink-2);text-decoration:none;transition:color .25s ease;}
a:hover{color:var(--c-primary);}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.ys-container{max-width:var(--container);margin:0 auto;padding:0 20px;}
.skip-link{position:absolute;left:12px;top:-70px;z-index:200;background:var(--c-primary);color:#fff;padding:10px 18px;border-radius:var(--r-sm);transition:top .25s ease;}
.skip-link:focus{top:12px;color:#fff;}

/* ============ header ============ */
.ys-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease;
}
.ys-header.is-scrolled{box-shadow:var(--shadow-1);}
.ys-nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .25s ease;}
.ys-header.is-scrolled .ys-nav{height:60px;}
.ys-logo{display:flex;align-items:center;gap:10px;color:var(--c-ink);}
.ys-logo:hover{color:var(--c-ink);}
.ys-logo svg{width:32px;height:32px;flex:none;}
.ys-logo-text{display:flex;flex-direction:column;line-height:1.2;}
.ys-logo-name{font-size:19px;font-weight:800;letter-spacing:.02em;}
.ys-logo-sub{font-size:11px;color:var(--c-ink-3);font-weight:400;letter-spacing:.04em;}
.ys-nav-links{display:flex;align-items:center;gap:26px;}
.ys-nav-links a{position:relative;font-size:15px;color:var(--c-ink-2);padding:6px 0;}
.ys-nav-links a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--c-primary);transition:right .25s ease;}
.ys-nav-links a:hover{color:var(--c-primary);}
.ys-nav-links a:hover::after,.ys-nav-links a.is-active::after{right:0;}
.ys-nav-links a.is-active{color:var(--c-primary);font-weight:600;}
.ys-nav-right{display:flex;align-items:center;gap:16px;}
.ys-burger{display:none;width:42px;height:42px;border:1px solid var(--c-line);background:#fff;border-radius:var(--r-sm);align-items:center;justify-content:center;cursor:pointer;position:relative;}
.ys-burger span{position:relative;display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;transition:.25s ease;}
.ys-burger span::before,.ys-burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);border-radius:2px;transition:.25s ease;}
.ys-burger span::before{top:-6px;}
.ys-burger span::after{top:6px;}
body.is-open .ys-burger span{background:transparent;}
body.is-open .ys-burger span::before{top:0;transform:rotate(45deg);}
body.is-open .ys-burger span::after{top:0;transform:rotate(-45deg);}
.ys-overlay{position:fixed;inset:0;background:rgba(33,29,39,.45);opacity:0;visibility:hidden;transition:.3s ease;z-index:140;}
body.is-open .ys-overlay{opacity:1;visibility:visible;}
body.is-open{overflow:hidden;}
.ys-drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;background:#fff;z-index:150;
  transform:translateX(100%);transition:transform .3s ease;display:flex;flex-direction:column;
  padding:26px 22px;box-shadow:-18px 0 40px -24px rgba(33,29,39,.4);overflow-y:auto;
}
body.is-open .ys-drawer{transform:translateX(0);}
.ys-drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.ys-drawer-head span{font-size:15px;font-weight:700;color:var(--c-ink);}
.ys-drawer-close{width:38px;height:38px;border:1px solid var(--c-line);border-radius:var(--r-sm);background:#fff;font-size:18px;color:var(--c-ink-2);cursor:pointer;line-height:1;}
.ys-drawer nav{display:flex;flex-direction:column;gap:4px;}
.ys-drawer nav a{padding:12px 8px;border-bottom:1px solid var(--c-line);font-size:15px;color:var(--c-ink);}
.ys-drawer nav a.is-active{color:var(--c-primary);font-weight:600;}
.ys-drawer-foot{margin-top:auto;padding-top:24px;}
.ys-drawer-foot .btn-primary{width:100%;}

/* ============ buttons ============ */
.btn-primary,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;padding:14px 26px;border-radius:var(--r-sm);
  cursor:pointer;transition:all .25s ease;border:1.5px solid transparent;text-align:center;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--shadow-cta);}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 14px 26px -12px rgba(216,69,94,.6);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);border-color:var(--c-primary-dark);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-white{background:#fff;color:var(--c-primary-dark);border-color:#fff;box-shadow:0 10px 22px -14px rgba(33,29,39,.5);}
.btn-white:hover{background:#FFF4F6;color:var(--c-primary-dark);transform:translateY(-1px);}

/* ============ section base ============ */
.ys-section{padding:76px 0;border-top:1px solid var(--c-line);}
.ys-section--warm{background:var(--c-bg-warm);}
.ys-section--plain{border-top:none;}
.ys-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;
  color:var(--c-primary-dark);background:var(--c-primary-soft);
  padding:6px 14px;border-radius:var(--r-pill);letter-spacing:.04em;
}
.ys-h2{font-size:26px;line-height:1.45;color:var(--c-ink);font-weight:700;margin:16px 0 12px;}
.ys-lead{font-size:15.5px;line-height:1.9;color:var(--c-ink-3);margin:0;}
.ys-sec-head{max-width:780px;margin-bottom:36px;}

/* ============ category hero (free features) ============ */
.cat-hero{
  position:relative;overflow:hidden;text-align:center;
  padding:64px 0 58px;
  background:linear-gradient(180deg,#FBF7F6 0%,#FFFFFF 100%);
  border-bottom:1px solid var(--c-line);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(216,69,94,.18) 1px, transparent 1px);
  background-size:22px 22px;opacity:.55;
  -webkit-mask-image:radial-gradient(ellipse at 50% 0%,#000 0%,transparent 72%);
  mask-image:radial-gradient(ellipse at 50% 0%,#000 0%,transparent 72%);
}
.cat-hero-inner{position:relative;z-index:1;max-width:880px;margin:0 auto;}
.cat-hero h1{
  font-size:38px;line-height:1.36;color:var(--c-ink);margin:18px 0 16px;font-weight:700;letter-spacing:-.01em;
  font-family:"Noto Serif SC","Songti SC",-apple-system,"PingFang SC",serif;
}
.cat-hero-sub{font-size:16px;color:var(--c-ink-3);margin:0 auto 28px;max-width:660px;}
.cat-hero-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin-bottom:42px;}
.feat-strip{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:0;padding:0;}
.feat-strip li{
  display:flex;align-items:center;justify-content:center;gap:10px;
  padding:16px 12px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  box-shadow:var(--shadow-1);font-size:14px;color:var(--c-ink);font-weight:500;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.feat-strip li:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(216,69,94,.4);}
.feat-strip svg{width:20px;height:20px;stroke:var(--c-primary);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex:none;}

/* ============ compare ============ */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.compare-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);box-shadow:var(--shadow-1);overflow:hidden;transition:box-shadow .25s ease,border-color .25s ease;}
.compare-card:hover{box-shadow:var(--shadow-2);border-color:rgba(216,69,94,.35);}
.compare-card header{padding:20px 24px;border-bottom:1px solid var(--c-line);display:flex;align-items:center;gap:10px;}
.compare-card--free header{background:var(--c-primary-soft);}
.compare-card--task header{background:var(--c-bg-soft);}
.compare-card header h3{margin:0;font-size:17px;color:var(--c-ink);}
.compare-card header em{font-style:normal;font-size:12px;color:var(--c-ink-3);margin-left:auto;}
.compare-list{list-style:none;margin:0;padding:8px 24px 20px;}
.compare-list li{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:13px 0;border-bottom:1px dashed var(--c-line);font-size:15px;color:var(--c-ink-2);}
.compare-list li:last-child{border-bottom:none;}
.mark-yes{color:var(--c-primary);font-weight:700;font-size:15px;}
.mark-dot{color:var(--c-ink-3);font-size:15px;}

/* ============ feature grid ============ */
.fn-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.fn-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:26px 24px;box-shadow:var(--shadow-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.fn-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(216,69,94,.4);}
.fn-icon{width:46px;height:46px;border-radius:12px;background:var(--c-primary-soft);display:flex;align-items:center;justify-content:center;margin-bottom:16px;}
.fn-icon svg{width:22px;height:22px;stroke:var(--c-primary);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.fn-card h3{font-size:17px;color:var(--c-ink);margin:0 0 8px;font-weight:600;}
.fn-card p{font-size:14.5px;line-height:1.85;color:var(--c-ink-3);margin:0 0 18px;}
.fn-tag{
  margin-top:auto;align-self:flex-start;font-size:12px;padding:4px 12px;border-radius:var(--r-pill);
  background:var(--c-bg-soft);color:var(--c-ink-2);letter-spacing:.02em;
}
.list-more{display:flex;justify-content:center;margin-top:38px;}

/* ============ steps ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step{border-top:2px dashed #E4DAE0;padding-top:22px;}
.step-num{
  display:block;font-size:34px;font-weight:800;line-height:1;letter-spacing:.02em;
  color:rgba(232,134,60,.16);-webkit-text-stroke:1.5px var(--c-accent);
  font-family:"Noto Serif SC","Songti SC",serif;
}
.step h3{font-size:16.5px;color:var(--c-ink);margin:14px 0 8px;}
.step p{font-size:14.5px;color:var(--c-ink-3);margin:0;}

/* ============ faq ============ */
.faq{background:var(--c-bg-warm);border:1px solid var(--c-line);border-radius:var(--r-lg);padding:6px 26px;}
.faq details{border-bottom:1px solid var(--c-line);}
.faq details:last-child{border-bottom:none;}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 0;font-size:16px;font-weight:600;color:var(--c-ink);transition:color .25s ease;
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary:hover{color:var(--c-primary);}
.faq-sign{color:var(--c-primary);font-size:20px;line-height:1;transition:transform .25s ease;flex:none;}
.faq details[open] .faq-sign{transform:rotate(45deg);}
.faq-body{margin:0;padding:0 0 20px;font-size:15px;line-height:1.95;color:var(--c-ink-2);}

/* ============ quotes ============ */
.quotes{display:grid;grid-template-columns:1.1fr .9fr;gap:22px;}
.quotes-col{display:grid;gap:22px;}
.quote{
  position:relative;display:flex;flex-direction:column;
  background:var(--c-bg-soft);border-radius:var(--r-md);padding:26px;
  transition:box-shadow .25s ease,transform .25s ease;
}
.quote:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.quote::before{content:"\201C";font-family:Georgia,"Songti SC",serif;font-size:48px;line-height:1;color:rgba(216,69,94,.28);margin-bottom:2px;}
.quote p{font-size:15px;line-height:1.9;color:var(--c-ink-2);margin:0 0 20px;}
.quote-meta{display:flex;align-items:center;gap:12px;margin-top:auto;}
.avatar{
  width:40px;height:40px;border-radius:50%;background:var(--c-primary-soft);
  display:flex;align-items:center;justify-content:center;color:var(--c-primary-dark);font-weight:700;font-size:15px;flex:none;
}
.quote-name{font-size:14px;color:var(--c-ink);font-weight:600;line-height:1.5;}
.quote-tag{font-size:12px;color:var(--c-ink-3);line-height:1.5;}

/* ============ tips ============ */
.tips{
  display:grid;grid-template-columns:.92fr 1.08fr;gap:34px;align-items:center;
  background:var(--c-bg-soft);border:1px solid var(--c-line);border-radius:var(--r-lg);padding:32px;
}
.tips figure{margin:0;overflow:hidden;border-radius:var(--r-md);background:var(--c-bg-warm);}
.tips img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .4s ease;border-radius:var(--r-md);}
.tips figure:hover img{transform:scale(1.02);}
.tips-list{list-style:none;margin:0;padding:0;counter-reset:t;}
.tips-list li{position:relative;padding-left:54px;margin-bottom:24px;font-size:15px;line-height:1.9;color:var(--c-ink-2);}
.tips-list li:last-child{margin-bottom:0;}
.tips-list li::before{
  counter-increment:t;content:counter(t,decimal-leading-zero);
  position:absolute;left:0;top:2px;font-size:15px;font-weight:800;color:var(--c-accent);letter-spacing:.06em;
}
.tips-list strong{display:block;color:var(--c-ink);font-weight:600;font-size:15.5px;margin-bottom:2px;}

/* ============ bottom cta ============ */
.cat-cta{
  position:relative;overflow:hidden;display:flex;align-items:center;justify-content:space-between;
  gap:28px;flex-wrap:wrap;background:var(--c-primary);color:#fff;border-radius:var(--r-lg);padding:44px 42px;
}
.cat-cta::after{
  content:"";position:absolute;right:-70px;bottom:-90px;width:280px;height:280px;border-radius:50%;
  border:26px solid rgba(255,255,255,.12);pointer-events:none;
}
.cat-cta h2{position:relative;z-index:1;font-size:24px;line-height:1.5;color:#fff;margin:0 0 8px;}
.cat-cta p{position:relative;z-index:1;margin:0;font-size:15px;color:rgba(255,255,255,.88);}
.cat-cta-actions{position:relative;z-index:1;display:flex;gap:14px;flex-wrap:wrap;}

/* ============ footer ============ */
.ys-footer{background:#211D27;color:rgba(255,255,255,.66);padding:56px 0 24px;font-size:14px;line-height:1.9;}
.ys-footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;}
.ys-footer .ys-logo-name{color:#fff;}
.ys-footer .ys-logo-sub{color:rgba(255,255,255,.5);}
.ys-footer p{font-size:13.5px;color:rgba(255,255,255,.62);margin:16px 0 0;line-height:1.95;}
.ys-footer h4{font-size:15px;color:#fff;margin:0 0 14px;font-weight:600;}
.ys-footer-links{display:flex;flex-direction:column;gap:10px;}
.ys-footer-links a{color:rgba(255,255,255,.66);font-size:13.5px;}
.ys-footer-links a:hover{color:var(--c-primary);}
.ys-tagcloud{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.ys-tagcloud span{font-size:12px;padding:4px 10px;border:1px solid rgba(255,255,255,.16);border-radius:var(--r-pill);color:rgba(255,255,255,.6);}
.ys-footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.1);margin-top:36px;padding-top:20px;
  font-size:12.5px;color:rgba(255,255,255,.46);
}

/* ============ responsive ============ */
@media (max-width:1023px){
  .ys-nav-links{display:none;}
  .ys-burger{display:flex;}
  .cat-hero h1{font-size:30px;}
  .fn-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);gap:28px;}
  .compare{grid-template-columns:1fr;}
  .quotes{grid-template-columns:1fr;}
  .tips{grid-template-columns:1fr;gap:26px;}
  .ys-footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .feat-strip{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:767px){
  .ys-section{padding:54px 0;}
  .ys-h2{font-size:22px;}
  .cat-hero{padding:46px 0 44px;}
  .cat-hero h1{font-size:26px;}
  .cat-hero-sub{font-size:15px;}
  .fn-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;gap:22px;}
  .step{border-top:none;border-left:2px dashed #E4DAE0;padding:0 0 0 20px;}
  .step-num{font-size:28px;}
  .cat-cta{padding:32px 24px;}
  .cat-cta h2{font-size:20px;}
  .faq{padding:4px 18px;}
  .tips{padding:22px;}
}
@media (max-width:520px){
  .ys-container{padding:0 16px;}
  .feat-strip{grid-template-columns:1fr;}
  .ys-footer-grid{grid-template-columns:1fr;}
  .cat-hero-actions .btn-primary,.cat-hero-actions .btn-ghost{width:100%;}
  .cat-cta-actions .btn-primary,.cat-cta-actions .btn-white{width:100%;}
  .ys-nav-right .btn-sm{padding:9px 14px;font-size:13px;}
  .ys-logo-name{font-size:17px;}
  .ys-logo-sub{font-size:10px;}
  .compare-list li{font-size:14px;}
}

/* roulang page: category3 */
:root{
  --c-primary:#D8455E;
  --c-primary-dark:#B3334A;
  --c-primary-soft:#FDEDF0;
  --c-accent:#E8863C;
  --c-ink:#211D27;
  --c-ink-2:#4B4553;
  --c-ink-3:#7E7788;
  --c-line:#ECE5E8;
  --c-bg:#FFFFFF;
  --c-bg-warm:#FBF7F6;
  --c-bg-soft:#F5EFF1;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(33,29,39,.05);
  --shadow-2:0 8px 24px -12px rgba(33,29,39,.16);
  --shadow-cta:0 10px 22px -10px rgba(216,69,94,.55);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:88px;}
body{
  margin:0;padding:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;line-height:1.9;letter-spacing:.01em;
  color:var(--c-ink-2);background:var(--c-bg);
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-ink-2);text-decoration:none;transition:color .25s ease;}
a:hover{color:var(--c-primary);}
button{font-family:inherit;}
p{margin:0 0 1em;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--c-ink);}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.ys-skip{
  position:absolute;left:-9999px;top:0;z-index:300;
  background:var(--c-primary);color:#fff;padding:10px 18px;border-radius:0 0 var(--r-sm) 0;font-size:14px;
}
.ys-skip:focus{left:0;color:#fff;}
.ys-container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
/* ============ header ============ */
.ys-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease;
}
.ys-header.is-scrolled{box-shadow:var(--shadow-1);}
.ys-nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .25s ease;}
.ys-header.is-scrolled .ys-nav{height:60px;}
.ys-logo{display:flex;align-items:center;gap:10px;color:var(--c-ink);}
.ys-logo:hover{color:var(--c-ink);}
.ys-logo svg{width:32px;height:32px;flex:none;}
.ys-logo-text{display:flex;flex-direction:column;line-height:1.2;}
.ys-logo-name{font-size:19px;font-weight:800;letter-spacing:.02em;color:var(--c-ink);}
.ys-logo-sub{font-size:11px;color:var(--c-ink-3);font-weight:400;letter-spacing:.04em;}
.ys-nav-links{display:flex;align-items:center;gap:26px;}
.ys-nav-links a{position:relative;font-size:15px;color:var(--c-ink-2);padding:6px 0;}
.ys-nav-links a::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--c-primary);
  transition:right .25s ease;
}
.ys-nav-links a:hover{color:var(--c-primary);}
.ys-nav-links a:hover::after,.ys-nav-links a.is-active::after{right:0;}
.ys-nav-links a.is-active{color:var(--c-primary);font-weight:600;}
.ys-nav-right{display:flex;align-items:center;gap:16px;}
.ys-nav-ghost{font-size:14px;color:var(--c-ink-3);}
.ys-nav-ghost:hover{color:var(--c-primary);}
.ys-burger{
  display:none;width:42px;height:42px;border:1px solid var(--c-line);border-radius:var(--r-sm);
  background:#fff;position:relative;cursor:pointer;transition:border-color .25s ease;
}
.ys-burger:hover{border-color:var(--c-primary);}
.ys-burger span{position:absolute;left:11px;right:11px;top:50%;height:2px;background:var(--c-ink);margin-top:-1px;transition:.25s ease;}
.ys-burger span::before,.ys-burger span::after{
  content:"";position:absolute;left:0;right:0;height:2px;background:var(--c-ink);transition:.25s ease;
}
.ys-burger span::before{top:-7px;}
.ys-burger span::after{top:7px;}
body.is-open .ys-burger span{background:transparent;}
body.is-open .ys-burger span::before{top:0;transform:rotate(45deg);}
body.is-open .ys-burger span::after{top:0;transform:rotate(-45deg);}
.ys-overlay{
  position:fixed;inset:0;background:rgba(33,29,39,.45);z-index:140;
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;
}
body.is-open .ys-overlay{opacity:1;visibility:visible;}
.ys-drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;background:#fff;z-index:150;
  transform:translateX(100%);transition:transform .3s ease;display:flex;flex-direction:column;
  padding:26px 22px;box-shadow:-18px 0 40px -24px rgba(33,29,39,.4);overflow-y:auto;
}
body.is-open .ys-drawer{transform:translateX(0);}
.ys-drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.ys-drawer-close{
  width:38px;height:38px;border:1px solid var(--c-line);border-radius:var(--r-sm);background:#fff;
  font-size:20px;color:var(--c-ink-2);cursor:pointer;line-height:1;transition:.25s ease;
}
.ys-drawer-close:hover{border-color:var(--c-primary);color:var(--c-primary);}
.ys-drawer nav{display:flex;flex-direction:column;gap:4px;}
.ys-drawer nav a{padding:12px 8px;border-bottom:1px solid var(--c-line);font-size:15px;color:var(--c-ink);}
.ys-drawer nav a.is-active{color:var(--c-primary);font-weight:600;}
.ys-drawer-foot{margin-top:auto;padding-top:24px;}
.ys-drawer-foot .btn-primary{width:100%;display:flex;text-align:center;}
body.is-open{overflow:hidden;}
/* ============ buttons ============ */
.btn-primary,.btn-ghost,.btn-white{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1.2;padding:14px 26px;border-radius:var(--r-sm);
  cursor:pointer;transition:all .25s ease;border:1.5px solid transparent;text-align:center;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--shadow-cta);}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 14px 26px -12px rgba(216,69,94,.6);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);border-color:var(--c-primary-dark);}
.btn-white{background:#fff;color:var(--c-primary-dark);box-shadow:0 10px 22px -14px rgba(33,29,39,.5);}
.btn-white:hover{background:#FFF6F8;color:var(--c-primary-dark);transform:translateY(-1px);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);border-bottom:1px solid transparent;}
.btn-link:hover{color:var(--c-primary-dark);border-bottom-color:var(--c-primary-dark);}
/* ============ page head ============ */
.ys-pagehead{background:var(--c-bg-warm);border-bottom:1px solid var(--c-line);padding:54px 0 50px;}
.ys-pagehead-grid{display:grid;grid-template-columns:1.55fr .85fr;gap:44px;align-items:start;}
.ys-kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;letter-spacing:.08em;
  color:var(--c-primary-dark);background:var(--c-primary-soft);border-radius:var(--r-pill);
  padding:5px 13px;margin-bottom:14px;
}
.ys-kicker::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-primary);}
.ys-pagehead h1{
  font-size:33px;line-height:1.42;letter-spacing:-.01em;margin:0 0 18px;
  font-family:"Noto Serif SC","Songti SC",-apple-system,"PingFang SC",serif;font-weight:700;
}
.ys-pagehead-lead{font-size:16px;line-height:1.95;color:var(--c-ink-2);max-width:660px;margin:0 0 14px;}
.ys-meta-row{display:flex;flex-wrap:wrap;gap:10px 24px;list-style:none;margin:22px 0 0;padding:0;font-size:13.5px;color:var(--c-ink-3);}
.ys-meta-row li{position:relative;padding-left:15px;}
.ys-meta-row li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--c-accent);opacity:.75;}
.ys-toc{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:22px 22px 18px;box-shadow:var(--shadow-1);position:sticky;top:92px;
}
.ys-toc-title{font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--c-ink-3);margin:0 0 12px;}
.ys-toc ol{list-style:none;margin:0;padding:0;counter-reset:toc;}
.ys-toc li{counter-increment:toc;}
.ys-toc a{
  display:flex;align-items:baseline;gap:10px;padding:10px 0;border-bottom:1px dashed var(--c-line);
  font-size:14px;color:var(--c-ink-2);
}
.ys-toc li:last-child a{border-bottom:0;}
.ys-toc a::before{content:"0" counter(toc);font-size:11px;font-weight:700;color:var(--c-accent);letter-spacing:.04em;}
.ys-toc a:hover{color:var(--c-primary);}
.ys-toc-note{font-size:12.5px;line-height:1.8;color:var(--c-ink-3);margin:14px 0 0;padding-top:14px;border-top:1px solid var(--c-line);}
/* ============ sections ============ */
.ys-section{padding:74px 0;border-top:1px solid var(--c-line);}
.ys-section.is-warm{background:var(--c-bg-warm);}
.ys-section.is-soft{background:var(--c-bg-soft);}
.ys-section-head{max-width:780px;margin-bottom:34px;}
.ys-section h2{font-size:26px;line-height:1.45;margin:0 0 12px;font-family:"Noto Serif SC","Songti SC",-apple-system,"PingFang SC",serif;}
.ys-section-lead{margin:0;font-size:15px;line-height:1.92;color:var(--c-ink-3);}
/* ============ knowledge cards ============ */
.ys-know-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}
.ys-know{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;
  box-shadow:var(--shadow-1);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.ys-know:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(216,69,94,.4);}
.ys-know-bar{height:4px;background:var(--c-primary);}
.ys-know:nth-child(2n) .ys-know-bar{background:var(--c-accent);}
.ys-know-body{padding:24px 24px 22px;}
.ys-know-icon{
  width:42px;height:42px;border-radius:10px;background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;
}
.ys-know-icon svg{width:22px;height:22px;}
.ys-know h3{font-size:17.5px;line-height:1.55;margin:0 0 8px;}
.ys-know p{margin:0 0 14px;font-size:14.5px;line-height:1.85;color:var(--c-ink-3);}
.ys-badge{
  display:inline-flex;align-items:center;font-size:12px;font-weight:600;padding:3px 11px;
  border-radius:var(--r-pill);background:var(--c-primary-soft);color:var(--c-primary-dark);
}
.ys-list-more{margin-top:32px;text-align:center;}
/* ============ split ============ */
.ys-split{
  display:grid;grid-template-columns:1fr 1fr;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--shadow-1);
}
.ys-split-col{padding:32px;}
.ys-split-col + .ys-split-col{border-left:1px solid var(--c-line);}
.ys-split-col h3{font-size:19px;margin:0 0 6px;}
.ys-split-col .split-lead{font-size:14px;color:var(--c-ink-3);margin:0 0 22px;line-height:1.85;}
.ys-num-list{list-style:none;margin:0;padding:0;display:grid;gap:18px;}
.ys-num-list li{display:flex;gap:14px;align-items:flex-start;}
.ys-num-list .num{
  flex:none;width:34px;height:34px;border-radius:50%;border:1.5px solid var(--c-accent);
  color:var(--c-accent);font-weight:700;font-size:13px;display:flex;align-items:center;justify-content:center;
}
.ys-num-list h4{margin:3px 0 4px;font-size:15.5px;color:var(--c-ink);}
.ys-num-list p{margin:0;font-size:14px;line-height:1.85;color:var(--c-ink-3);}
.ys-switch-list{list-style:none;margin:0;padding:0;display:grid;gap:18px;}
.ys-switch-list strong{display:block;font-size:15.5px;color:var(--c-ink);margin-bottom:4px;font-weight:600;}
.ys-switch-list span{display:block;font-size:14px;line-height:1.85;color:var(--c-ink-3);}
/* ============ myths ============ */
.ys-myth{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.ys-myth-item{
  display:flex;gap:14px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:22px;box-shadow:var(--shadow-1);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.ys-myth-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(216,69,94,.4);}
.ys-x{
  flex:none;width:28px;height:28px;border-radius:50%;background:var(--c-primary-soft);color:var(--c-primary-dark);
  font-weight:700;font-size:15px;display:flex;align-items:center;justify-content:center;
}
.ys-myth-item h3{font-size:15.5px;margin:0 0 6px;line-height:1.6;}
.ys-myth-item p{margin:0;font-size:14px;line-height:1.85;color:var(--c-ink-3);}
/* ============ meetup ============ */
.ys-meetup-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;}
.ys-check-list{list-style:none;margin:22px 0 0;padding:0;display:grid;gap:13px;}
.ys-check-list li{position:relative;padding-left:34px;font-size:15px;line-height:1.8;color:var(--c-ink-2);}
.ys-check-list li::before{
  content:"✓";position:absolute;left:0;top:1px;width:22px;height:22px;border-radius:50%;
  background:var(--c-primary);color:#fff;font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;line-height:1;
}
.ys-figure{margin:0;border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;background:var(--c-bg-soft);}
.ys-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .45s ease;}
.ys-figure:hover img{transform:scale(1.02);}
.ys-figure figcaption{padding:12px 16px;font-size:13px;color:var(--c-ink-3);background:#fff;border-top:1px solid var(--c-line);}
/* ============ steps ============ */
.ys-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.ys-step{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:26px 24px;
  box-shadow:var(--shadow-1);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.ys-step:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(216,69,94,.4);}
.ys-step .step-no{display:block;font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--c-accent);}
.ys-step h3{font-size:17px;margin:8px 0 8px;}
.ys-step p{margin:0;font-size:14px;line-height:1.85;color:var(--c-ink-3);}
/* ============ related ============ */
.ys-related{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.ys-related a{
  display:block;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:22px;box-shadow:var(--shadow-1);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.ys-related a:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(216,69,94,.45);color:var(--c-ink-2);}
.ys-related .ys-badge{margin-bottom:12px;}
.ys-related h3{font-size:16px;line-height:1.6;margin:0 0 8px;transition:color .25s ease;}
.ys-related a:hover h3{color:var(--c-primary);}
.ys-related p{margin:0;font-size:13.5px;line-height:1.85;color:var(--c-ink-3);}
/* ============ cta ============ */
.ys-cta{
  position:relative;overflow:hidden;background:var(--c-primary);color:#fff;
  border-top:1px solid var(--c-primary-dark);
}
.ys-cta::after{
  content:"";position:absolute;right:-90px;bottom:-140px;width:340px;height:340px;border-radius:50%;
  border:42px solid rgba(255,255,255,.1);
}
.ys-cta-inner{
  position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;
  gap:28px;flex-wrap:wrap;padding:50px 0;
}
.ys-cta h2{color:#fff;font-size:24px;line-height:1.5;margin:0 0 8px;}
.ys-cta p{margin:0;font-size:15px;color:rgba(255,255,255,.86);}
.ys-cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.ys-cta .btn-ghost{border-color:rgba(255,255,255,.7);color:#fff;background:transparent;}
.ys-cta .btn-ghost:hover{background:rgba(255,255,255,.16);color:#fff;border-color:#fff;}
/* ============ footer ============ */
.ys-footer{background:#211D27;color:rgba(255,255,255,.72);padding:64px 0 26px;font-size:14px;}
.ys-footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.12);
}
.ys-footer .ys-logo-name{color:#fff;}
.ys-footer .ys-logo-sub{color:rgba(255,255,255,.5);}
.ys-footer p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);margin:18px 0 18px;max-width:380px;}
.ys-tagcloud{display:flex;flex-wrap:wrap;gap:8px;}
.ys-tagcloud span{
  font-size:12px;padding:4px 11px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.08);color:rgba(255,255,255,.75);
}
.ys-footer h4{color:#fff;font-size:15px;margin:0 0 16px;font-weight:600;letter-spacing:.02em;}
.ys-footer-links{display:flex;flex-direction:column;gap:10px;}
.ys-footer-links a{color:rgba(255,255,255,.66);font-size:14px;}
.ys-footer-links a:hover{color:var(--c-primary);}
.ys-footer-bottom{
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  padding-top:22px;font-size:13px;line-height:2;color:rgba(255,255,255,.45);
}
/* ============ responsive ============ */
@media (max-width:1023px){
  .ys-nav-links{display:none;}
  .ys-burger{display:block;}
  .ys-pagehead-grid{grid-template-columns:1fr;gap:30px;}
  .ys-toc{position:static;}
  .ys-know-grid{grid-template-columns:1fr;}
  .ys-split{grid-template-columns:1fr;}
  .ys-split-col + .ys-split-col{border-left:0;border-top:1px solid var(--c-line);}
  .ys-myth{grid-template-columns:1fr;}
  .ys-meetup-grid{grid-template-columns:1fr;gap:30px;}
  .ys-steps{grid-template-columns:1fr;}
  .ys-related{grid-template-columns:1fr 1fr;}
  .ys-footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .ys-section{padding:56px 0;}
}
@media (max-width:767px){
  .ys-pagehead{padding:40px 0 42px;}
  .ys-pagehead h1{font-size:26px;}
  .ys-section h2{font-size:22px;}
  .ys-related{grid-template-columns:1fr;}
  .ys-cta-inner{padding:38px 0;}
  .ys-cta h2{font-size:21px;}
}
@media (max-width:640px){
  .ys-container{padding:0 16px;}
  .ys-nav{height:64px;}
  .ys-nav-ghost{display:none;}
  .ys-logo-name{font-size:17px;}
  .ys-logo-sub{font-size:10px;}
  .ys-nav-right{gap:10px;}
  .ys-pagehead-lead{font-size:15px;}
  .ys-meta-row{gap:8px 16px;font-size:13px;}
  .ys-split-col{padding:22px;}
  .ys-know-body{padding:20px;}
  .ys-footer-grid{grid-template-columns:1fr;}
  .ys-footer{padding:48px 0 22px;}
  .ys-footer-bottom{flex-direction:column;gap:6px;}
}